The SI unit of potential difference is the volt (V).Electric potential at a point is the potential energy per unit charge at that point. The potential energy of a charge q at a point with electric potential V is given by U = qV.
What is the relationship between electric potential and electric potential energy?admin2024-11-12T21:14:28+05:30
Potential difference represents the energy required to move a unit charge between two points in an electric field or circuit. It is the driving force behind the flow of electric current in a circuit.
What is the physical significance of potential difference?admin2024-11-12T21:12:45+05:30
Potential difference is measured using a voltmeter. The voltmeter is connected in parallel across the two points between which the potential difference is to be measured.
How is potential difference measured in an electric circuit?admin2024-11-12T21:12:29+05:30
A switch controls the flow of current by either completing or breaking the circuit. When the switch is closed, the circuit is complete, and current flows. When the switch is open, the circuit is incomplete, and current stops flowing.
How does a switch control the flow of current in a circuit?admin2024-11-12T21:03:19+05:30
Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically. Batteries produce DC, while power plants generate AC.
What is the difference between direct current (DC) and alternating current (AC)?admin2024-11-12T21:02:24+05:30
Electric current is the flow of electric charge through a conductor. It is defined as the rate at which charge flows through a point in a circuit and is measured in amperes (A).
What is electric current?admin2024-11-12T21:00:46+05:30
An electric fuse melts because of the heating effect of electric current. Excessive current generates heat that melts the fuse wire, breaking the circuit and preventing damage to appliances.
Why does an electric fuse melt when excessive current flows through it?admin2024-11-05T15:06:57+05:30
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